Automatic burglar-proof sash-lock.



L E. L. SLOAN.

AUTOMATIC BURGLAR PROOF SASH LOOK.

APPLICATION rum) JAN.21,'1913.

1,077,312, Patented Nov. 4, 1913.

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AUTOMATIC BUBGLAR-PROOF SASH-IlOCK.

Specification of Letters Patent.

Patented Nov. 4, 1913.

Application filed January 21, 1913. Serial No. 743,372.

To all whom it may concern:

Be it known that I, ELMER L. SLoAN, a citizen of the United States ofAmerica, residing at Joplin, in the county ofJasper and State ofMissouri,have invented certain new and useful Improvements in AutomaticBurglar-Proof Sash-Locks, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to a sash lock and has special reference to adevice of this character which is provided with means for antomaticallylocking the same.

Another object of this invention is the production of an efficient meansfor holding the latching memberin a locked position after the sameengages the keeper.

A still further object of this invention is the production of a safetylatch for holding the latching member in a position whereby the same maybe automatically released for engaging the keeper.

With these and other objects in view this invention consists of certainnovel combinations constructions, and arrangements of parts as willbehereinafter fully described and claimed.

In the accompanying drawing :Figure 1 is a perspective view of the lockillustrating how the same appears prior to the looking engagement. Fig.2 is a top plan view of the device in a locked position. Fig. 8 is aside view of the latching member and the base. Fig. 4 is a longitudinalsection of the latching member showing the keeper in elevation. Fig. 5is a bottom plan view of the base. Fig. 6 is a. perspective view of thebase. Fig. 7 is a perspective View of the keeper.

Referring to the accompanying drawing by numerals it will be seen thatthe device is used in combination with the ordinary sash membersl and 2.The sash memberl is provided with the keeper 3 which is formed toconstitute a retaining finger 4.

The sash 2 is adapted to carry the base and latching member. The basemember comprises a rectangular body 5 which carries at its side portionthe depending flanges 6. One of the depending flanges 6 is provided witha cut-away portion 7 and. an entrance pocket 8. When the base is placedupon the sash 2 it is positioned so as to allow the cut-away portion 7and the entrance pocket 8 to be placed adjacent to the sash whichcarries the keeper 3. The enin such a posit-ion as trance, pocket 8 isso positioned so as to allow the keeper to pass theret-hrough when thewindow is closed. The base 5 is also provided with a pivot member whichcomprises the rounded head 9 in which is formed the groove 10. A coilspring 11 is positioned within this groove 10 and is fastened at the end12 to the base whereby the head 9 is normally urged in one direction.Integrally carried by the head 9 is a squared neck 13 which is formedadjacent the rounded hear ing portion 14. This rounded bearing portion14 is adapted to work within the aperture 15 formed in the base 5,whilecthe squared neck 13 is adapted to extend above the same. Thelatching member comprises a body 16 which is adapted to be engaged bythe squared neck 13 whereby the same will be rotatably mounted upon thebase. This body 16 is provided with an extended portion 17 which isprovided with the integrally formed sleeve 18 adjacent which is formedthe gripping portion 19.

Positioned within the sleeve 18 thereis a locking arm 2O whichterminates in the laterally extending neck 21 which extends to aposition The opposite end of the locking arm 20 is provided with thedepending finger 22 which is adapted to pass through the aperture 23formed in the latching member 16 and into the opening 24 formed in thebase 5. It will be seen that by use of this locking arm the latchingmember will be securely locked in position as illustrated in Figs. 2 and4, whereby after the window has been closed it will be impossible tomove the latch member from the outside'of the window. hen it is desiredto move the latching member 16 the neck 21 is gripped and drawn towardthe gripping portion 19 whereby the finger portion22 will be withdrawnfrom engageadjacent the gripping member 19.

ment with the latching member 16 and the base whereby the latchingmember may be easily swung. It will of course be seen that the latchlngmember 16 is provided with a notched portion-25 which is adapted toregister with the receiving pocket 8 whereby the keeper 3 may easilypass therethrough.

In order to hold the latching member 16 to allow the keeper to passthrough the receiving pocket 8 and the notched portion 25 before thesame is engaged by this latching member the upstanding flange 26 of thelatching member 16 is provided with the laterally extending lug 27. Thebase 5 is also provided with a bearing lug 28 and with the openings 29and 29. Carried by the base there is a safety latch which comprises anelongated body 30 which terminates at one end of the upwardly extendingarm 31 and at the other end with the inclined portion 32. As illustratedin Fig. 1 it will be seen that when the window is open that the lug 27will rest behind the upwardly extending arm 31 whereby the latchport-ion 25 will register with the receiving pocket 8. However, when thesash 2 is moved downwardly the inclined portion 32 will strike upon thesash 1 whereby the upwardly extending arm 31 will be swung outwardly andwill in this manner release the lug 27 and will allow the latchingmember 16 to spring by means of the spring 11. By means of this safetylatch it will be seen that the latching member will normally be held insuch a position as to allow the keeper to pass in such a position as toallow the same to be engaged by this latching member for securelylocking the same. If by some means the latching member 16 were movedaround the lug 27 would strike upon the upstanding finger 31 whereby therotary move ment of this latching member 16 would be checked. Since thislug would strike upon the front side of this upstanding finger 81 thelatch portion 25 would not register with the receiving pocket 8 butwould overhang this receiving pocket 8 and would thereby prevent the twosashes from being moved relative to each other and would in this mannerstill hold the device in a locked position.

From the foregoing description it will be seen that a sash lock has beenproduced whereby the latch member may be swung so as to be placed insuch a position as to allow the sashes to be moved relative to eachother and which is also provided with means for holding the same in anoperable position whereby when this means is removed the latching memberwill engage the keeper for holding the device in a locked position andthat the latch member is also provided with a secondary locking memberfor securely holding the latching member against rota tion upon thebase.

Having thus described the invention what is claimed as new, is

1. A sash lock comprising a base, a latching member pivotally mountedupon said base, means forurging said latching member to swing in onedirection, a safety latch carried by said base comprising an elongatedbody, an upwardly extending arm carried by one end of said body, aninclined finger carried by the other end of said body, said upwardlyextending arm adapted to engage said latching member for holding saidlatching member in a set position, said inclined finger adapted to beengaged by a window sash, whereby said inclined finger will swingupwardly and the upwardly extending arm will swing outwardly fromengagement with said latching member for allowing said latching memberto swing into engagement with a keeper.

2. A sash lock comprising a base, a latching member pivotally mountedupon said base, means for urging said latching memher to swing in onedirection, a safety latch comprisin a body, said body positioned uponthe under side of said base for protecting the same, said body having anupwardly bent finger, at one end extending through said base, saidlatching member provided with a lug, said arm adapted to engage said lugfor holding said latching member in a set position, said body having aninclined finger at its opposite end, said inclined finger adapted to beswung upwardly for swinging said arm from engagement with said lug,whereby said latching member can swing into engagement with a keeper.

3. A sash lock comprising a base, a latching member pivotally mountedupon said base, said latching member provided with a neck, a sleeveintegrally formed upon said neck, sleeve, said locking arm provided witha depending finger, said base and said latching member provided withregistering apertures, said finger fitting in said apertures for holdingsaid latching member against pivotal movement, and an upwardly extendingneck carried by said locking arm, said neck positioned adjacent theouter end of said neck of said latching member, whereby said upwardlyextending neck may be moved for lifting said finger from engagement withbase and latching member for allowing said latching member to be swung.

In testimony whereof ll hereunto ailix my signature in presence of twowitnesses.

ELMER L. SLOAN.

Witnesses Byron H. Coon, Manon HILDRETi-L M Copies of this patent may beobtained for fivecents each, by addressing the Commissioner of Patents,Washington, D. G.

a locking arm positioned within said,

